@misc{indiciaeb9bafd44916b,
  title = {Liberian age province (about 2,700 m.y.)and adjacent provinces in Liberia and Sierra Leone},
  author = {Patrick M. Hurley and G. W. Leo and R.W. White and H.W. Fairbairn},
  year = {1971},
  doi = {10.1130/0016-7606(1971)82[3483:lapama]2.0.co;2},
  url = {https://pubs.usgs.gov/publication/70207289},
  note = {Source identifier: 70207289}
}